Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Input Leakage Current

0V

±10

µA

Output Leakage Current

0V

±10

µA

Supply Current

1

mA

Supply Current (Standby)

1

mA

Input Low Voltage

–0.3

1.5

V

Input High Voltage

3

V

Output Low Voltage

0.4

V

(1)

Battery Supply Voltage

2.6

3

3.5

V

Battery Supply Current

450

500

nA

Note: 1. The RAYOVAC BR1225 or equivalent is recommended as the battery supply.

Table 6. DC Characteristics

Symbol

Parameter

Min

Max

Unit

Input Capacitance (SCL)

7

pF

(2)

Output Capacitance (SDA, FT/OUT)

10

pF

Notes: 1. Effective capacitance measured with power supply at 5V.

2. Sampled, not 100% tested.

3. Outputs deselected.

°C, f = 1 MHz )

Symbol

Parameter

Min

Typ

Max

Unit

Power-fail Deselect Voltage

V

Battery Back-up Switchover Voltage

V

°C or –40 to 85°C)

Symbol

Parameter

Min

Typ

Max

Unit

Resonant Frequency

32.768

kHz

Series Resistance

35

k

Ω

Load Capacitance

12.5

pF

Notes:

Load capacitors are integrated within the MK41T56. Circuit board layout considerations for the 32.768 kHz crystal of

minimum trace lengths and isolation from RF generating signals should be taken into account.

STMicroelectronics recommends the ECS-.327-12.5-8SP-2 quartz crystal is recommended for industrial temperature operations.

ESC Inc. can be contacted at 800-237-1041 or 913-782-7787 for further information on this crystal type.

Table 8. Crystal Electrical Characteristics

(Externally Supplied)

4/15

MK41T56, MKI41T56